Pot and kiln construction



W. WESTBURY ET AL.

POT AND -KILN CONSTRUCTION Original Filed May 20, 1924 5 Sheets-Sheet l Nov, 19, 1929. w..wEsTBURY ET AL l 1,736,026

POT AND KILN CONSTRUCTION original Filed May 2o. 1924 4 a sheets-Sheet '2 2 I Q O ATTORNEY.,

Nov. 19, 1929. w. wEsTBURY T T Al. 1,736,026

T POT AND KILN CONSTRUCTION Original Filed May 20. 1924 .5 sheets-Sheet 5 ou l 50 ,5/ "4! gg 'IL' .5/-

0^ 2 f 1 )4f l 1 Z/ 7/; NVENToRa' Q .Q l' ATTORNEY,

Patented Nov. 19, i929 WrLLIAivL wEsTBnnY Ann PATRICK. comme', or .lnnnrnnnnnonxnnsns iAsv- ,srenons VBY Mnsnaassrennnnrs, To rrAnmnG eLAss'ooMPANY, orV ronrsau"rrrr,Y ARKANsAaA eonronarronfor WEST VIRGINIA l Y f rote Ann K11-,N voolvsrmcrror f Application alea lviay ee, 1924, serial No. 714,680; Renewed January 21, 1926.Y

This inventionfrelates `to potand kiln'constructions, and has' particular` reference to Vdouble reversible glass dra-wing pots einp'loyed in drawing'glasscylinders and which .are movable alternately bet-.veenI drawing and kdraining posit-ions and arranged for cooperan with a heating kiln operative formelting the aftermath from either pot `when disposed in'draining position.`

1 One'object `ofthe invention isjto provide novel means broadly v.ernbodying a rotary re- .versing `shaft and afpotcarrying frame pivoted to swing thereon forv reversing the positions of twov pots for alternately disp-osling the same in drawing'and draining .positions.

Y Another object'of our invent-ionisjto provide novel means for mounting and reversing the pots whereby, when'one pot 'is in horizontal drawing position, the other or inverted pot will be arranged at an angle between the horizontal .and vertical for registry Withthe mout-h of a'ki'lnformed ina correspondingly v inclinedor 'sloping kiln wall, allowing ready and convenient movement'of the pot to be heated linto and outy of the kiln mouth.

Still anotherobjec-t of our invention is to provide means for revolving and scraping the inverted pot so as to facilitate the removal of the aftermath and to smooth all portions` of and close all crevicesin the bottom wa-ll of the pot liable to 'cause' flaws or imperfections in the draw. j f M v "Still .another object of our invention is `to ,provide simple, reliable and eflicient means `for reversing the potswhereby the reversing` operation may be accomplished in an easy, v

readyand convenient manner and Without liability of injury to attendants orto the parts of the apparatus.

Still another object 4of our invention is to provide means forv adjusting the vpot structure in a vertical plane in order that ,the invertedY pot may be moved Vinto the kiln mouth and subsequently elevated out of the kiln mouth for the succeeding reversing motions vof 'the pots; toprovide means for .locking the pot structurel vagainst swinging motion during the progress of a. draw and while the inverted pot is being revolved and4 scraped; to

vshowing the pots in the mid the'pivotal motions of the pots in their refI versing actions in order to avoid objectionable slammingy and possibledainage to the pots or other parts of the apparatus.

Still another and general object of our in-Yl vention is to provide a'reversible pot struc-*J ture ,which may be operated withmaximum convenience, ease and speed, and with ffeficient rworking resultsrin, the production of cylinders whichwill beto a'large degree free from blisters, thick` and thin flaws or imperfections. v

With these andother objects Vin view, the

j portions 'or ,other invention consistsof the features of construc tion, combination4 and arrangement -Ofpar-tS, v,

hereinafter Vfull-y describedand claimed, refy ings, in which ,Figurey l is a side elevation of a `pot 'and i kiln structure` embodying .my invention,

showing one of the pots in drawing position" andthe other pot in draining position.` i

Figure 2 is a vertical front-to-rear section through the same.

Figure Bis a front elevation ofthe same."

ofFiDgure l. Y

Figure 4 is a horizontal section online lf-4e' `-70 erence being had to theaccoinpanying draw Figure 5 lis a similar section'on line 5--5`ofV 'l Figure 3.

Figurel 6 is a top plan viewof the device d position of their reversing motion.

Figure 7 is aV front elevation with'palrts as shown in Figure' 6. ,Y Y

'Figure 8 is a sectiontaken substantiallyon line 8-8 of Figure 2.

.Figure 9 is a'det'ail section through the' pot locking and adjusting device and a portion of the main pot supporting frame.

Figure l0 is an enlarged Ldetail sec-tion.`

taken substantially on line'lO-lO of Figure 2. j f Y j l Figure ll is a similar, section taken on line llll vof Figure 2. 4

Referring nowV more particularly to 'the drawings, l and la-designate a pair of glass ico drawing pot-s arranged so as to face generally in opposite directions, each pot being detachably mounted, as usual, or in any ordinary or preferred manner, upon a carrier frame or head 2, allowing ready application of the pots for use and their removal wheneverrequired for repairs or the substitution of new pots. The heads 2 of the respective pots are rotatably mounted upon stationary heads 3 l at the opposite ends of a hollow sector-shaped or wedge-shaped body 4, forming a main frame on which both pots aresupported. Anti-friction bearings 5 of suitable type may be provided between the surfaces of eachvpot carrying head2 and its supporting head 3 in order to permit requisite ease of rotary motion of the pot, for a purpose presently described. j y

The sector-shaped body 4 is composed of a casting formed of spaced lsideV walls 4?* united by the heads 3. These 4side walls are spaced j a comparatively wide distance lapart at the front, where the body extends on the arc of greater radius, and thence converge, like the of curvature of least radius.

heads 3, rearwardly and arespaced a. comparatively short distance apart at the rear or vertex of the bodyin the region of the arc j A horizontal sliaft6 extends through 'the body 4 from front to' rear thereof, and to this shaft the body is pivotally connected at kits vertex portion, as-

at 7. The pivotal connection 7, which may j' .consist of a pin passing through theshaft 6 and sides of the Ybody 4, fixes the body 4 to vthershaft so as to turn withsaid shaft when the latter is turned, while permitting said 'body to' swing on such pin asan laxis in the direction of the general arc of curvature of the body, at right anglesto the direction of rotation of the shaft. `,The arc of curvature of the body 4 is such that when one of the pots, as the Vpot 1, is .ind upper horizontal 45.o to thehorizontal plane of the pot 1.V

drawing position, the other pot, as the pot 1, will be in a lower draining position and disposed at an angle between the vertical and horizontal, preferably at an angle of about vBy' imparting a half revolution to the shaft 6, in onedirection or the other, the positions of the pots 1 and 12l will be reversed, the pot 1 taking the position of the pot 1a while the latter assumes the position formerly occupied by the pot 1. In this pot reversing action the body 4 swings with the shaft 6 to effect a proper shifting of the positions of the pots, and said body 4 also swings on its pivotal connection by gravity in the reversing action in order that the pot 1a, which before shifting lies' at a greater distance from the shaft than the pot'l, may in the turning operation take the position of the pot 1 with relation to the shaft 6, while the pot 1 assumes the relatively depressed position formerly occupied by the pot 1a. A guide slot 8 at the frontv of the body 4 permits of this pivotal motion of the body 4 on the pivot 7 without interference from the shaft.

Arranged below the pot structure is a heat-y mouth or opening 10, formed in a sloping top wall of therkiln, the slope of the wall corresponding substantially to the inclination of `ing kiln 9 provided with a pot receiving the lower or inverted pot. This mouth 10 ceeding drawing operation. The inclined arrangementof the inverted pot in the mouv h 10 facilitates the drainage of the melted a termath therefrom by gravity intothe kiln` d chamber 11, as will be Areadily understood,`

and the described formation of the kiln also allows of the ready and easy movement of the inverted pot into'the kiln and its withdrawal therefrom. l f

A frame structure is provided porting the pot structure and the shaft 6, which frame structure comprises uprights 14 and 15 slidably mounted at their lower ends for vertical adjustment in guides l-disposed upon the front and rear walls ofthe kiln One end 17 ofthe shaft 6 is journaled'in a bearing 18 pivotally mounted onthe upright 15, as at 19, while the otherend 20 of said shaft is journaled in a bearing 21 `vertically movable inthe guideway of a` guide memberv 22 suitably formed or provided yupon the upright 14. As shown, the bearingv 21is carried by a verticallymovable yoke 23`mov-l able in the guidewayl22, to which yoke is swiveled the lower end of an adjusting screw 24, mounted in the guide member 22 and provided at its upper end with a hand wheel 25 whereby it maybe turned in one directionor the other to raise or lower the yoke 23and, consequently, the bearingi21. By rthis means it is evident that the 'sh'aft6 Vmay be tilted on the bearing pivot 19, by adjustment of the screw 24 and the movement of the bearing 21, to adapt the pot which is in drawing rpo,w sition to be tilted in one direction or the otherY along the line of an imaginary aXis arranged `at right angles to the shaft 6 forl accurate in such direction.`

leveling .adjustments Means are also provided, as hereinafter `described, whereby the pot structure may be held from pivotal `motion' with the shaft 6 during the drawing operation, while permitting of a tilting adjustment ofthe pot which is in drawing position for leveling operations along an imaginary aXial line coincident with for; supto the imaginary aXial line first mentioned,

l whereby tilting adjustments of the' pot in twodirections at right angles to Veach other, J

for leveling purposes, may be readily and conveniently effected. An operating lever, f or any other suitable means, may bey applied j v. pots :onpzthe pivot V7 during'tlievreversing n `operation, a froliler'39 is mountedon the shaft andiarrangedwto-be engaged by.v a track railms to the end 17 of the shaft for the purpose of turning the shaft for the pot reversingactions. I n

Supported at the side of the furnacey is a rock shaft 26 provided at its ends with arms 27 pivotally coupled byv links 28 to the rei spective uprights 14 and 15. A lever 29 is fixed `to the shaft 26 whereby the shaft may be rocked, and through the connections described, the pot structure bodily lowered and raised for the purpose of moving` the lower pot which is to be drained into and outof the kiln mouth. Fixed to the shaft 26 are also arms 30 provided with adjustable counter-weights 31, which are designed to -substantially counter-balance the weight of the vpot structure, thus permitting. it vto be raised and lowered with ease and facility.

Slidably mounted upon the kiln is a rod 32 carrying at its'inner end a scraper bar 33; This scraper bar 33 is designed, when not in g service, to lie against the upper sloping face or top wall of the kiln, and it is yadapted u f 4to bel projected into the bottomV pot and brought into engagement with the innerV surface of the bottom'wallv thereof-'for Vpot smoothing and scraping actions. The outer end of the rod 32 is-'suitably coupled' to an operating lever 34 or other suitable voperating means, whereby the scraper 83 maybe projected` into working, position and withdrawn at the completion of a scraping action.

The scraper, which is generally indicated,

with a suitable scraping edge and vits connection with the lever or operating device 34 may be such as to adapt the scraper .to be held rigidly pressed against the pot bottom with a desired degree of force and without rotation during the scraping-operation. The scraper is designed to be projected into bearing Contact with the pot which is in draining position after the latter has' been heated sufficiently from the kiln to melt the aftermath, the scraper serving in operation to effect the removal of accumulated glass pinion i6-fon a shaft 37 supported at'the front n Vof the. furnacef and operativelydriven from Y .an electric or other suitable m0torf38. '.VVhen the pot structureis raised'` fora/ reverse ac-V ltion theiring 35 moves out of mesh with the@I 70 gear 86 in anobvious manner. i

v In order. to" ensurean easymotion ofvtli 4() disposed uponthe interior of the hollow vbody 4,=which track'rail.' lies lin' bearing lconment ofV said pot structure on" the` pivot 7. "Alsoga second roller 39a1-maybe loosely mounted Von the shaft to travel. along' trackrails formed-'bythe walls'of'slotl 8, 'thus addi-1,85' .tionally V,supporting aiidfholding 'the body 4 from any tendencyto llateral swing` `in the reversing actiomy @Ther-rollers andv track rails further serve in thisconne'ction torevduce V'slamming ofthe invertedpotl asl :it yis-e0 turned over'. 1 In order "to still-f Afurther *cushvion the movements-of the -pot structurepn fthe 4pivotal connection 47',I suitablel cushioning means may be provided. This cushioning means may be inthe"form of dash pots of-795 any appropriateconstruction, shownin the present instance Vvasair cushioning cylinders 4 1 on' the Y'shaft adapted to 'receiveplungers or `pistons 425cm the heads-3m the reversing actions, whereby each pot' asit is turned 100 o-ver 'from drainingto drawing position will be properly checked in its movement and cushioned, avoiding any liability` of injury to operatorsjor'damage to the apparatus, w Mounted'on `the upright 14 is an' internallylil-105 may be of the water-cooled type and provided threaded sleeve 43 receiving athreaded 'shaft r44 carrying at one endv a lug orprojection 45 'and at its other'end anv operating handle 446.'` The sleeve' 43 `is mounted Yfor-rotation v andagainstv endwi'se 'movement on the v'up-l A110 vvright 14and is provided'withf ahandwwheel 47.y The lug 45 normally lies in alinement withthe slotl 8in the vbody '4. and'mayvbe moved into and outf'ofengagemeiit with i said slot by reverse rotary'fmovements of115 thev sleeve 43. When projected into engagement with the` slot18 the lug 45 will lock the pot structureas a-whole rigidly in posiand to smooth the surface of the bottom of i the pot so as to close all pits or crevices prior to the use of the pot for the subsequent drawtion against! lateral orsidewise' movement, which is particularly desirable during the time a draw fis made from the upper pot while the lower pot' is beingrevolved for the scrap- Ving action, Vthus preventing any possible -structure as afwhole may bey swung laterally to a determi-ned Vdegree lin either direction 1'30 n on the shaftv as an"4 aXis for a'tilting leveling adjustment ofthe upper pot on av line at right angles to the tilting leveling ad- -justment afforded by movement of the pot on the pivotal connection 19- through `the adjustment ofthe hand screw 24. Y Through the leveling adjustments thus afforded the pot from'which the draw is being made, or`

about to be made, may be tilted in one direction or the other in two planesat right angles toeach other for the purpose ofzdisposing -it at an absolutely horizontal levelor inclined to the horizontalwtov a proper degree necessary to shift thecenter of they charge of glass relatively to the center of the cylinder in order to correct any tendency to the draw` ing of a thick or thin cylinder, arising out pot reversing action,

of any imperfections in the form of kthe pot itself, due-*to warpage or othericauses, or any imperfectmounting of the pot on vits supportsI or imperfect mounting of the supports -on the kiln structure or lto comfpensate for any other mounting imperfections or adjustments liable to causedrawing of athickand thin cylinder. Vhen thelug Vor projection Llis withdrawn from the slot that Vour invention providesay drawing appav ratusemployinga two pot structure by means of which when one pot is in drawing position the' other pot may be disposed in aninclined y'position within orabove the mouth of a kiln form-ed4 in a. correspondingly inclined wall is required to vshift a potfrom drawing to draining position, in which draining position Y the pot'will: be heated for the'melting out of the aftermath. 1 It will also be seen that our invention provides simple and effective means `whereby the inverted pot-.may be scraped for the removal of melted glass and to lill all air Y pocketing pits or crevices inthe bottom ywall thereof. It will further be seen that ourin- Y Y bility of injuryl to attendants or damage` to the apparatus. VFinally, it will be seen that y the invention provides simplek and effective means whereby the pots may be locked against any shifting of the upper pot out of correct ldrawing position, and for adjusting the vupper pot so as to correct all defects liable to cause thick and thin and other imperfect draws. No yclaim is made herein to the of manufacture involving the axial turning of the pot during the reheating operation, since the latter is made the subject-matter of a divisionalv applicationiiled by us on HJanuary 21st, i926, serial No.. 82,879Y

new method v Having thus fully described our invention, we claim 1. In glass-drawing apparatus, the combination of a rotatable shafta frame connected to the shaft, a pair of oppostely fac-. ingpots rotatably-mounted on the frame on'r opposite sides of the shaft and arranged at an acute angle to each other, whereby when one pot is in upright horizontal drawing posit-ion the other pot will be in inverted inclined draining position, aremelting furnace below the frame having an inclined wall Yprol- Yvided with an opening in position to remelt the glass residue in the inverted pot, and means for axially turning the inverted pot.

2. In glass-drawingapparatus, the combination with a pot and means for supporting the pot successively in drawing and draining positions, of means forv remelting the glass residue in the pot while the pot is in draining position, and means for axially turning theV pot during the remelting operation. K Y

3. In glass-drawing apparatus, the combination with a pot and means for Vsupporting the pot successively in drawingand draining positionsfof means for remelting theglass residue in the pot while the pot is in draining position, and means for axially-turning the pot, and means for scraping the pot, during thek remelting operation.

bination with a kiln having an eye inclinedA from the horizontal, of a pot carrier having a pair of pots lying at an angle to each other l such that one may be in drawing position :and

V"thenother in the kiln eye, means for shifting Y said pot carrier to bring the potsalternately of the kiln, so that but a simple .adjustment to drawing position and to draining position relative to the kiln eye, a'ndmeans for relativelyshiftingsaid draining pot andv kiln eye without destroying vdrawing position of the drawing pot.

Inrtestimony whereofl we aiiix oursignatures.vv

` WILLIAM VVESTBRY.

yPATRICK W` COLLINS.

. V 4:. In a glass drawing apparatus, thev com- Y 

